




"""simple docstring"""




import json
import os
from typing import Dict, List, Optional, Tuple

from ...tokenization_utils import PreTrainedTokenizer
from ...utils import logging


lowerCAmelCase				:     Any					=				logging.get_logger(__name__)


lowerCAmelCase				:     Optional[int]					=				{
    """vocab_file""": """vocab.json""",
    """tokenizer_config_file""": """tokenizer_config.json""",
    """merges_file""": """merges.txt""",
}

lowerCAmelCase				:     str					=				{
    """vocab_file""": {
        """facebook/s2t-wav2vec2-large-en-de""": (
            """https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/vocab.json"""
        ),
    },
    """tokenizer_config_file""": {
        """facebook/s2t-wav2vec2-large-en-de""": (
            """https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/tokenizer_config.json"""
        ),
    },
    """merges_file""": {
        """facebook/s2t-wav2vec2-large-en-de""": (
            """https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/merges.txt"""
        ),
    },
}

lowerCAmelCase				:     Tuple					=				"""</w>"""
lowerCAmelCase				:     str					=				"""@@ """



def        a__					(							snake_case__							)		->   int:
			lowerCamelCase      =   set()
			lowerCamelCase      =   word[0]
			for char in word[1:]:
						pairs.add((prev_char, char)							)
						lowerCamelCase      =   char
			return pairs


# Speech2Text2 has no max input length
lowerCAmelCase				:     List[Any]					=				{"""facebook/s2t-wav2vec2-large-en-de""": 1024}






class        __magic_name__				(			UpperCAmelCase__							):






				'''simple docstring'''
				__UpperCamelCase         =		VOCAB_FILES_NAMES
				__UpperCamelCase         =		PRETRAINED_VOCAB_FILES_MAP
				__UpperCamelCase         =		PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
				__UpperCamelCase         =		["input_ids", "attention_mask"]





				def __init__(			self						,					_a						,					_a="<s>"						,					_a="<pad>"						,					_a="</s>"						,					_a="<unk>"						,					_a=False						,					_a=None						,					**_a						,					):





							"""simple docstring"""
							super().__init__(
							    unk_token=_a						,					bos_token=_a						,					eos_token=_a						,					pad_token=_a						,					do_lower_case=_a						,					**_a						,					)

							lowerCamelCase      =   do_lower_case

							with open(_a						,					encoding="""utf-8"""					) as vocab_handle:
										lowerCamelCase      =   json.load(_a					)
							lowerCamelCase      =   {v: k for k, v in self.encoder.items()}

							if merges_file is None:
										logger.info(f'No merges files provided. {self.__class__.__name__} can only be used for decoding.'					)

										lowerCamelCase      =   None
										lowerCamelCase      =   None
							else:
										with open(_a						,					encoding="""utf-8"""					) as merges_handle:
													lowerCamelCase      =   merges_handle.read().split("""\n"""					)[:-1]

										lowerCamelCase      =   [tuple(merge.split()[:2]					) for merge in merges]
										lowerCamelCase      =   dict(zip(_a						,					range(len(_a					)					)					)					)
										lowerCamelCase      =   {}





				@property
				def   _lowerCAmelCase							(			self					):





							"""simple docstring"""
							return len(self.decoder					)





				def   _lowerCAmelCase							(			self					):





							"""simple docstring"""
							return dict(self.encoder						,					**self.added_tokens_encoder					)





				def   _lowerCAmelCase							(			self						,					_a					):





							"""simple docstring"""
							lowerCamelCase      =   tuple(token[:-1]					) + (token[-1] + BPE_TOKEN_MERGES,)
							if token in self.cache:
										return self.cache[token]
							lowerCamelCase      =   get_pairs(_a					)

							if not pairs:
										return token

							while True:
										lowerCamelCase      =   min(_a						,					key=lambda _a					: self.bpe_ranks.get(_a						,					float("""inf"""					)					)					)
										if bigram not in self.bpe_ranks:
													break
										lowerCamelCase ,  lowerCamelCase      =   bigram
										lowerCamelCase      =   []
										lowerCamelCase      =   0
										while i < len(_a					):
													try:
																lowerCamelCase      =   word.index(_a						,					_a					)
													except ValueError:
																new_word.extend(word[i:]					)
																break
													else:
																new_word.extend(word[i:j]					)
																lowerCamelCase      =   j

													if word[i] == first and i < len(_a					) - 1 and word[i + 1] == second:
																new_word.append(first + second					)
																i += 2
													else:
																new_word.append(word[i]					)
																i += 1
										lowerCamelCase      =   tuple(_a					)
										lowerCamelCase      =   new_word
										if len(_a					) == 1:
													break
										else:
													lowerCamelCase      =   get_pairs(_a					)
							lowerCamelCase      =   """ """.join(_a					)
							if word == "\n  " + BPE_TOKEN_MERGES:
										lowerCamelCase      =   """\n""" + BPE_TOKEN_MERGES

							if word.endswith(_a					):
										lowerCamelCase      =   word.replace(_a						,					""""""					)

							lowerCamelCase      =   word.replace(""" """						,					_a					)
							lowerCamelCase      =   word
							return word





				def   _lowerCAmelCase							(			self						,					_a					):





							"""simple docstring"""

							if self.bpe_ranks is None:
										raise ValueError(
										    """This tokenizer was instantiated without a `merges.txt` file, so"""
										    """ that it can only be used for decoding, not for encoding."""
										    """Make sure to provide `merges.txt` file at instantiation to enable """
										    """encoding."""					)

							if self.do_lower_case:
										lowerCamelCase      =   text.lower()

							lowerCamelCase      =   text.split()

							lowerCamelCase      =   []
							for token in text:
										if token:
													split_tokens.extend(list(self.bpe(_a					).split(""" """					)					)					)

							return split_tokens





				def   _lowerCAmelCase							(			self						,					_a					):





							"""simple docstring"""
							return self.encoder.get(_a						,					self.encoder.get(self.unk_token					)					)





				def   _lowerCAmelCase							(			self						,					_a					):





							"""simple docstring"""
							lowerCamelCase      =   self.decoder.get(_a						,					self.unk_token					)
							return result





				def   _lowerCAmelCase							(			self						,					_a					):





							"""simple docstring"""
							lowerCamelCase      =   """ """.join(_a					)

							# make sure @@ tokens are concatenated
							lowerCamelCase      =   """""".join(string.split(_a					)					)

							return string





				def   _lowerCAmelCase							(			self						,					_a						,					_a = None					):





							"""simple docstring"""
							if not os.path.isdir(_a					):
										logger.error(f'Vocabulary path ({save_directory}) should be a directory'					)
										return
							lowerCamelCase      =   os.path.join(
							    _a						,					(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""vocab_file"""]					)
							lowerCamelCase      =   os.path.join(
							    _a						,					(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""merges_file"""]					)

							with open(_a						,					"""w"""						,					encoding="""utf-8"""					) as f:
										f.write(json.dumps(self.encoder						,					indent=2						,					sort_keys=_a						,					ensure_ascii=_a					) + """\n"""					)

							lowerCamelCase      =   0
							if self.bpe_ranks is None:
										return (vocab_file,)

							with open(_a						,					"""w"""						,					encoding="""utf-8"""					) as writer:
										for bpe_tokens, token_index in sorted(self.bpe_ranks.items()						,					key=lambda _a					: kv[1]					):
													if index != token_index:
																logger.warning(
																    f'Saving vocabulary to {merges_file}: BPE merge indices are not consecutive.'
																    """ Please check that the tokenizer is not corrupted!"""					)
																lowerCamelCase      =   token_index
													writer.write(""" """.join(_a					) + """\n"""					)
													index += 1

							return (vocab_file, merges_file)









"""simple docstring"""




from typing import Optional

import numpy as np
import torch
from torch import nn
from transformers import GPTaConfig, GPTaLMHeadModel
from transformers.modeling_utils import ModuleUtilsMixin

from ...configuration_utils import ConfigMixin, register_to_config
from ...models import ModelMixin






class        __magic_name__				(			UpperCAmelCase__		,   UpperCAmelCase__		,   UpperCAmelCase__							):






				'''simple docstring'''
				__UpperCamelCase         =		[R"h\.\d+\.attn\.bias", R"h\.\d+\.attn\.masked_bias"]





				@register_to_config
				def __init__(			self						,					_a						,					_a						,					_a = None						,					_a = 50_257						,					_a = 1_024						,					_a = 768						,					_a = 12						,					_a = 12						,					_a = None						,					_a = "gelu_new"						,					_a = 0.1						,					_a = 0.1						,					_a = 0.1						,					_a = 1e-5						,					_a = 0.02						,					_a = True						,					_a = True						,					_a = False						,					_a = False						,					):





							"""simple docstring"""
							super().__init__()

							lowerCamelCase      =   prefix_length

							if prefix_inner_dim != n_embd and prefix_hidden_dim is None:
										raise ValueError(
										    f'`prefix_hidden_dim` cannot be `None` when `prefix_inner_dim`: {prefix_hidden_dim} and'
										    f' `n_embd`: {n_embd} are not equal.'					)

							lowerCamelCase      =   prefix_inner_dim
							lowerCamelCase      =   prefix_hidden_dim

							lowerCamelCase      =   (
							    nn.Linear(self.prefix_inner_dim						,					self.prefix_hidden_dim					)
							    if self.prefix_hidden_dim is not None
							    else nn.Identity()
							)
							lowerCamelCase      =   (
							    nn.Linear(self.prefix_hidden_dim						,					_a					) if self.prefix_hidden_dim is not None else nn.Identity()
							)

							lowerCamelCase      =   GPTaConfig(
							    vocab_size=_a						,					n_positions=_a						,					n_embd=_a						,					n_layer=_a						,					n_head=_a						,					n_inner=_a						,					activation_function=_a						,					resid_pdrop=_a						,					embd_pdrop=_a						,					attn_pdrop=_a						,					layer_norm_epsilon=_a						,					initializer_range=_a						,					scale_attn_weights=_a						,					use_cache=_a						,					scale_attn_by_inverse_layer_idx=_a						,					reorder_and_upcast_attn=_a						,					)
							lowerCamelCase      =   GPTaLMHeadModel(_a					)





				def   _lowerCAmelCase							(			self						,					_a						,					_a						,					_a = None						,					_a = None						,					):





							"""simple docstring"""
							lowerCamelCase      =   self.transformer.transformer.wte(_a					)
							lowerCamelCase      =   self.encode_prefix(_a					)
							lowerCamelCase      =   self.decode_prefix(_a					)
							lowerCamelCase      =   torch.cat((prefix_embeds, embedding_text)						,					dim=1					)

							if labels is not None:
										lowerCamelCase      =   self.get_dummy_token(input_ids.shape[0]						,					input_ids.device					)
										lowerCamelCase      =   torch.cat((dummy_token, input_ids)						,					dim=1					)
							lowerCamelCase      =   self.transformer(inputs_embeds=_a						,					labels=_a						,					attention_mask=_a					)
							if self.prefix_hidden_dim is not None:
										return out, hidden
							else:
										return out





				def   _lowerCAmelCase							(			self						,					_a						,					_a					):





							"""simple docstring"""
							return torch.zeros(_a						,					self.prefix_length						,					dtype=torch.intaa						,					device=_a					)





				def   _lowerCAmelCase							(			self						,					_a					):





							"""simple docstring"""
							return self.encode_prefix(_a					)





				@torch.no_grad()
				def   _lowerCAmelCase							(			self						,					_a						,					_a						,					_a					):





							"""simple docstring"""
							lowerCamelCase      =   torch.split(_a						,					1						,					dim=0					)
							lowerCamelCase      =   []
							lowerCamelCase      =   []
							for feature in features:
										lowerCamelCase      =   self.decode_prefix(feature.to(_a					)					)  # back to the clip feature
										# Only support beam search for now
										lowerCamelCase ,  lowerCamelCase      =   self.generate_beam(
										    input_embeds=_a						,					device=_a						,					eos_token_id=_a					)
										generated_tokens.append(output_tokens[0]					)
										generated_seq_lengths.append(seq_lengths[0]					)
							lowerCamelCase      =   torch.stack(_a					)
							lowerCamelCase      =   torch.stack(_a					)
							return generated_tokens, generated_seq_lengths





				@torch.no_grad()
				def   _lowerCAmelCase							(			self						,					_a=None						,					_a=None						,					_a=None						,					_a = 5						,					_a = 67						,					_a = 1.0						,					_a = None						,					):





							"""simple docstring"""
							lowerCamelCase      =   eos_token_id
							lowerCamelCase      =   None
							lowerCamelCase      =   None
							lowerCamelCase      =   torch.ones(_a						,					device=_a						,					dtype=torch.int					)
							lowerCamelCase      =   torch.zeros(_a						,					device=_a						,					dtype=torch.bool					)

							if input_embeds is not None:
										lowerCamelCase      =   input_embeds
							else:
										lowerCamelCase      =   self.transformer.transformer.wte(_a					)

							for i in range(_a					):
										lowerCamelCase      =   self.transformer(inputs_embeds=_a					)
										lowerCamelCase      =   outputs.logits
										lowerCamelCase      =   logits[:, -1, :] / (temperature if temperature > 0 else 1.0)
										lowerCamelCase      =   logits.softmax(-1					).log()

										if scores is None:
													lowerCamelCase ,  lowerCamelCase      =   logits.topk(_a						,					-1					)
													lowerCamelCase      =   generated.expand(_a						,					*generated.shape[1:]					)
													lowerCamelCase ,  lowerCamelCase      =   next_tokens.permute(1						,					0					), scores.squeeze(0					)
													if tokens is None:
																lowerCamelCase      =   next_tokens
													else:
																lowerCamelCase      =   tokens.expand(_a						,					*tokens.shape[1:]					)
																lowerCamelCase      =   torch.cat((tokens, next_tokens)						,					dim=1					)
										else:
													lowerCamelCase      =   -float(np.inf					)
													lowerCamelCase      =   0
													lowerCamelCase      =   scores[:, None] + logits
													seq_lengths[~is_stopped] += 1
													lowerCamelCase      =   scores_sum / seq_lengths[:, None]
													lowerCamelCase ,  lowerCamelCase      =   scores_sum_average.view(-1					).topk(_a						,					-1					)
													lowerCamelCase      =   next_tokens // scores_sum.shape[1]
													lowerCamelCase      =   seq_lengths[next_tokens_source]
													lowerCamelCase      =   next_tokens % scores_sum.shape[1]
													lowerCamelCase      =   next_tokens.unsqueeze(1					)
													lowerCamelCase      =   tokens[next_tokens_source]
													lowerCamelCase      =   torch.cat((tokens, next_tokens)						,					dim=1					)
													lowerCamelCase      =   generated[next_tokens_source]
													lowerCamelCase      =   scores_sum_average * seq_lengths
													lowerCamelCase      =   is_stopped[next_tokens_source]

										lowerCamelCase      =   self.transformer.transformer.wte(next_tokens.squeeze()					).view(generated.shape[0]						,					1						,					-1					)
										lowerCamelCase      =   torch.cat((generated, next_token_embed)						,					dim=1					)
										lowerCamelCase      =   is_stopped + next_tokens.eq(_a					).squeeze()
										if is_stopped.all():
													break

							lowerCamelCase      =   scores / seq_lengths
							lowerCamelCase      =   scores.argsort(descending=_a					)
							# tokens tensors are already padded to max_seq_length
							lowerCamelCase      =   [tokens[i] for i in order]
							lowerCamelCase      =   torch.stack(_a						,					dim=0					)
							lowerCamelCase      =   torch.tensor([seq_lengths[i] for i in order]						,					dtype=seq_lengths.dtype					)
							return output_texts, seq_lengths



